Modal cutoff conditions for a waveguide having an annular guiding region with a parabolically graded refractive-index profile

Abstract

An annular dielectric waveguide having a truncated parabolically graded refractive‐index profile in the guiding region has been analytically studied for cutoff conditions. The thickness effect of the annular guiding region on the cutoff values of the z‐component of the propagation constant for some lower order modes has been studied for some special cases. ©1999 John Wiley & Sons, Inc. Microwave Opt Technol Lett 22: 167–171, 1999.

Modal Dispersion Characteristics of a Single Mode Dielectric Optical Waveguide With a Guiding Region Cross-Section Bounded by Two Involuted Spirals

“…New material like metallic, chiral materials, liquid crystals, magnetic crystals etc have also been introduced as constitutive materials for new kinds of unconventional waveguides in either core or cladding [14][15][16][17][18][19][20][21][22][23][24][25][26]. These smart structured waveguides with smart materials provide a rich variety of characteristics; several books and research papers have appeared in this area.…”